// Copyright 2018 Proyectos y Sistemas de Mantenimiento SL (eProsima).
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------
// Modification history:
// feature: Split history as an independent common module
// ------------------------------------------------------------------

#include <edds/rtps/reader/StatelessPersistentReader.h>
#include <history/ReaderHistory.h>
#include <rtps/persistence/PersistenceService.h>
#include <rtps/participant/RTPSParticipantImpl.h>
#include <rtps/reader/ReaderHistoryState.hpp>

namespace evbs {
namespace ertps {
namespace rtps {

StatelessPersistentReader::StatelessPersistentReader(RTPSParticipantImpl* impl, const GUID_t& guid,
                                                     const ReaderAttributes& att, ReaderHistory* hist,
                                                     ReaderListener* listen, IPersistenceService* persistence)
    : StatelessReader(impl, guid, att, hist, listen), persistence_(persistence), persistence_guid_() {
    init(guid, att);
}

StatelessPersistentReader::StatelessPersistentReader(RTPSParticipantImpl* impl, const GUID_t& guid,
                                                     const ReaderAttributes& att,
                                                     const std::shared_ptr<IPayloadPool>& payload_pool,
                                                     ReaderHistory* hist, ReaderListener* listen,
                                                     IPersistenceService* persistence)
    : StatelessReader(impl, guid, att, payload_pool, hist, listen), persistence_(persistence), persistence_guid_() {
    init(guid, att);
}

StatelessPersistentReader::StatelessPersistentReader(RTPSParticipantImpl* impl, const GUID_t& guid,
                                                     const ReaderAttributes& att,
                                                     const std::shared_ptr<IChangePool>& change_pool,
                                                     ReaderHistory* hist, ReaderListener* listen,
                                                     IPersistenceService* persistence)
    : StatelessReader(impl, guid, att, change_pool, hist, listen), persistence_(persistence), persistence_guid_() {
    init(guid, att);
}

StatelessPersistentReader::StatelessPersistentReader(RTPSParticipantImpl* impl, const GUID_t& guid,
                                                     const ReaderAttributes& att,
                                                     const std::shared_ptr<IPayloadPool>& payload_pool,
                                                     const std::shared_ptr<IChangePool>& change_pool,
                                                     ReaderHistory* hist, ReaderListener* listen,
                                                     IPersistenceService* persistence)
    : StatelessReader(impl, guid, att, payload_pool, change_pool, hist, listen),
      persistence_(persistence),
      persistence_guid_() {
    init(guid, att);
}

void StatelessPersistentReader::init(const GUID_t& guid, const ReaderAttributes& att) {
    // When persistence GUID is unknown, create from rtps GUID
    GUID_t p_guid = att.endpoint.persistence_guid == c_Guid_Unknown ? guid : att.endpoint.persistence_guid;
    std::ostringstream ss;
    ss << p_guid;
    persistence_guid_ = ss.str();
    (void)persistence_->load_reader_from_storage(persistence_guid_, history_state_->history_record);
}

StatelessPersistentReader::~StatelessPersistentReader() {
    delete persistence_;
}

void StatelessPersistentReader::set_last_notified(const GUID_t& writer_guid, const SequenceNumber_t& seq) {
    history_state_->history_record[writer_guid] = seq;
    (void)persistence_->update_writer_seq_on_storage(persistence_guid_, writer_guid, seq);
}

bool StatelessPersistentReader::may_remove_history_record(bool /* removed_by_lease */) {
    return false;
}

} /* namespace rtps */
} /* namespace ertps */
} /* namespace evbs */
